English – English Dictionaries
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| Macmillan Dictionary |
| Merriam-Webster |
| Dictionary.com |
| Answers.com |
| The Free Dictionary |
| Wiktionary (by Wikipedia) |
| Wordnik |
| Ask Oxford |
| Your Dictionary |
| Business Dictionary.com (business terms) |
| Medical Dictionary Online |
| Urban Dictionary (slang and idioms) |
| One Look – search engine that will look for definitions posted on other dictionary sites! Highly recommended! |
English – French / French - English Dictionaries
 WordReference.com (also includes German, Spanish, Italian, etc..) |
| Grand Dictionnaire (business, technical, medical, scientific, etc..) |
| Sylang |
| Reverso |
| Larousse |